ΔE–E Telescope for the Detection of Charged Particles Based on a Si Detector and a SiPM Array with Scintillation Crystals
- Авторлар: Mitcuk V.V.1,2, Mordovskoy M.V.1,2
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Мекемелер:
- Institute for Nuclear Research
- Moscow Institute of Physics and Technology (State University)
- Шығарылым: Том 81, № 10 (2018)
- Беттер: 1471-1476
- Бөлім: Engineering Design of Nuclear Physics Equipment
- URL: https://journal-vniispk.ru/1063-7788/article/view/193941
- DOI: https://doi.org/10.1134/S1063778818100101
- ID: 193941
Дәйексөз келтіру
Аннотация
The characteristics of a ΔE–E telescope, which is planned to be used in the experimental setup focused on few-nucleon reactions, are studied. The required parameters of the ΔE–E telescope were determined on the basis of the numerical modeling of probable reactions. The telescope comprises a ΔE detector, which is a totally depleted surface-barrier silicon detector with a diameter of 8 mm and a thickness of ~24 μm, and an E detector based on LFS-8 crystals and a 16-element SiPM ARRAYC-30035-16P-PCB array. The telescope is designed, in particular, for coincidence detection of two charged particles emitted at close angles. This is made possible by the matrix structure of the E detector. The time resolution of the ΔE detector and the time and amplitude resolutions of all cells of the E detector were determined. The standard method of detection of two γ quanta from the beta decay of 22Na was used to measure the time resolution. Time coincidences of signals from the ΔE detector and a neutron detector based on a liquid scintillator (EJ-301) with its FWHM no worse than 1 ns were obtained. Similar measurements for the E-detector cells revealed time (less than 0.6 ns) and amplitude (~15% at an energy of ~1 MeV) resolutions that satisfy the experimental requirements for particle sorting and determination of their energy. The intrinsic background of the E detector, which arises from the radioactivity of LFS-8 crystals, was measured. The relative number of events corresponding to simultaneous triggering of two or more E-detector cells irradiated with α particles from a 226Ra source was also determined. This value may help estimate the number of random coincidences in a real experiment.
Авторлар туралы
V. Mitcuk
Institute for Nuclear Research; Moscow Institute of Physics and Technology (State University)
Хат алмасуға жауапты Автор.
Email: vyacheslav.mitsuk@phystech.edu
Ресей, Moscow, 117312; Moscow, 117303
M. Mordovskoy
Institute for Nuclear Research; Moscow Institute of Physics and Technology (State University)
Email: vyacheslav.mitsuk@phystech.edu
Ресей, Moscow, 117312; Moscow, 117303
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